package com.lkd.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.google.common.base.Strings;
import com.google.common.collect.Lists;
import com.lkd.common.VMSystem;
import com.lkd.config.TopicConfig;
import com.lkd.contract.SupplyChannel;
import com.lkd.contract.SupplyContract;
import com.lkd.dao.VendingMachineDao;
import com.lkd.emq.MqttProducer;
import com.lkd.entity.*;
import com.lkd.exception.LogicException;
import com.lkd.http.vo.CreateVMReq;
import com.lkd.service.*;
import com.lkd.utils.UUIDUtils;
import com.lkd.vo.Pager;
import com.lkd.vo.SkuVO;
import com.lkd.vo.VmVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;

@Service
@Slf4j
public class VendingMachineServiceImpl extends ServiceImpl<VendingMachineDao, VendingMachineEntity> implements VendingMachineService {

    @Autowired
    private NodeService nodeService;

    @Autowired
    private ChannelService channelService;

    @Autowired
    private VmTypeService vmTypeService;

    @Resource
    private VendingMachineDao vendingMachineDao;

    @Autowired
    private SkuService skuService;

    @Autowired
    private MqttProducer mqttProducer;


    @Override
    public List<VendingMachineEntity> getByNodeId(Long nodeId) {
        List<VendingMachineEntity> list = vendingMachineDao.findByNodeId(nodeId);
        return list;
    }

    @Override
    @Transactional(rollbackFor = {Exception.class})
    public boolean add(CreateVMReq vendingMachine) {
        VendingMachineEntity vendingMachineEntity = new VendingMachineEntity();
        vendingMachineEntity.setNodeId(Long.valueOf(vendingMachine.getNodeId()));
        vendingMachineEntity.setVmType(vendingMachine.getVmType());
        NodeEntity nodeEntity = nodeService.getById(vendingMachine.getNodeId());
        if (nodeEntity == null) {
            throw new LogicException("所选点位不存在");
        }
        //复制属性
        BeanUtils.copyProperties(nodeEntity, vendingMachineEntity);
        vendingMachineEntity.setCreateUserId(Long.valueOf(vendingMachine.getCreateUserId()));
        vendingMachineEntity.setInnerCode(UUIDUtils.getUUID());
        vendingMachineEntity.setClientId(UUIDUtils.generateClientId(vendingMachineEntity.getInnerCode()));
        this.save(vendingMachineEntity);
        //创建货道数据
        createChannel(vendingMachineEntity);
        return true;
    }


    /**
     * 创建货道
     *
     * @param vm
     * @return
     */
    private boolean createChannel(VendingMachineEntity vm) {
        VmTypeEntity vmType = vmTypeService.getById(vm.getVmType());
        List<ChannelEntity> channelList = Lists.newArrayList();
        for (int i = 1; i <= vmType.getVmRow(); i++) {
            for (int j = 1; j <= vmType.getVmCol(); j++) {
                ChannelEntity channel = new ChannelEntity();
                channel.setChannelCode(i + "-" + j);
                channel.setCurrentCapacity(0);
                channel.setInnerCode(vm.getInnerCode());
                channel.setLastSupplyTime(vm.getLastSupplyTime());
                channel.setMaxCapacity(vmType.getChannelMaxCapacity());
                channel.setVmId(vm.getId());
                channelList.add(channel);
            }
        }
        channelService.saveBatch(channelList);
        return true;
    }


    @Override
    public boolean update(Long id, Long nodeId) {
        VendingMachineEntity vm = this.getById(id);
        if (VMSystem.VM_STATUS_RUNNING.equals(vm.getVmStatus())) {
            throw new LogicException("改设备正在运营");
        }
        NodeEntity nodeEntity = nodeService.getById(nodeId);
        BeanUtils.copyProperties(nodeEntity, vm);
        return this.updateById(vm);
    }


    @Override
    public Pager<String> getAllInnerCodes(boolean isRunning, long pageIndex, long pageSize) {
        com.baomidou.mybatisplus.extension.plugins.pagination.Page<VendingMachineEntity> page = new com.baomidou.mybatisplus.extension.plugins.pagination.Page<>(pageIndex, pageSize);

        QueryWrapper<VendingMachineEntity> qw = new QueryWrapper<>();
        if (isRunning) {
            qw.lambda()
                    .select(VendingMachineEntity::getInnerCode)
                    .eq(VendingMachineEntity::getVmStatus, 1);
        } else {
            qw.lambda()
                    .select(VendingMachineEntity::getInnerCode)
                    .ne(VendingMachineEntity::getVmStatus, 1);
        }
        this.page(page, qw);
        Pager<String> result = new Pager<>();
        result.setCurrentPageRecords(page.getRecords().stream().map(VendingMachineEntity::getInnerCode).collect(Collectors.toList()));
        result.setPageIndex(page.getCurrent());
        result.setPageSize(page.getSize());
        result.setTotalCount(page.getTotal());

        return result;
    }

    @Override
    public Pager<VendingMachineEntity> query(Long pageIndex, Long pageSize, Integer status, String innerCode) {
        com.baomidou.mybatisplus.extension.plugins.pagination.Page<VendingMachineEntity> page
                = new com.baomidou.mybatisplus.extension.plugins.pagination.Page<>(pageIndex, pageSize);
        LambdaQueryWrapper<VendingMachineEntity> queryWrapper = new LambdaQueryWrapper<>();
        if (status != null) {
            queryWrapper.eq(VendingMachineEntity::getVmStatus, status);
        }
        if (!Strings.isNullOrEmpty(innerCode)) {
            queryWrapper.likeLeft(VendingMachineEntity::getInnerCode, innerCode);
        }
        this.page(page, queryWrapper);

        return Pager.build(page);
    }


    @Override
    public VmVO findByInnerCode(String innerCode) {
        LambdaQueryWrapper<VendingMachineEntity> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(VendingMachineEntity::getInnerCode, innerCode);
        VendingMachineEntity vm = this.getOne(queryWrapper);
        VmVO vmVO = new VmVO();
        BeanUtils.copyProperties(vm, vmVO);
        vmVO.setNodeAddr(vm.getNode().getAddr());//地址
        vmVO.setNodeName(vm.getNode().getName());//名称
        return vmVO;
    }


    @Override
    public boolean updateStatus(String innerCode, Integer status) {
        try {
            UpdateWrapper<VendingMachineEntity> uw = new UpdateWrapper<>();
            uw.lambda()
                    .eq(VendingMachineEntity::getInnerCode, innerCode)
                    .set(VendingMachineEntity::getVmStatus, status);
            this.update(uw);

        } catch (Exception ex) {
            log.error("updateStatus error,innerCode is " + innerCode + " status is " + status, ex);
            return false;
        }
        return true;
    }


    @Override
    public List<SkuVO> getSkuListByInnerCode(String innerCode) {
        //获取货道列表
        List<ChannelEntity> channelList = channelService.getChannelesByInnerCode(innerCode).stream()
                .filter(c -> c.getSkuId() > 0 && c.getSku() != null).collect(Collectors.toList());
        //获取有商品的库存余量
        Map<SkuEntity, Integer> skuMap = channelList.stream()
                .collect(Collectors.groupingBy(
                        ChannelEntity::getSku,
                        Collectors.summingInt(ChannelEntity::getCurrentCapacity)));//对库存数求和
        return skuMap.entrySet().stream().map(entry -> {
                    SkuEntity sku = entry.getKey(); //查询商品
                    SkuVO skuVO = new SkuVO();
                    BeanUtils.copyProperties(sku, skuVO);
                    skuVO.setImage(sku.getSkuImage());//图片
                    skuVO.setCapacity(entry.getValue());
                    skuVO.setRealPrice(sku.getPrice());//真实价格
                    return skuVO;
                }).sorted(Comparator.comparing(SkuVO::getCapacity).reversed())  //按库存量降序排序
                .collect(Collectors.toList());
    }

    @Override
    public Boolean hasCapacity(String innerCode, Long skuId) {
        var qw = new LambdaQueryWrapper<ChannelEntity>();
        qw
                .eq(ChannelEntity::getInnerCode, innerCode)
                .eq(ChannelEntity::getSkuId, skuId)
                .gt(ChannelEntity::getCurrentCapacity, 0);
        return channelService.count(qw) > 0;
    }

    /**
     * 完成工单更新售货机状态
     *
     * @param innerCode
     * @param taskType
     */
    @Override
    public void updateStatusByTaskType(String innerCode, int taskType) {
        //1.查询售货机
        VendingMachineEntity vendingMachine = this.getOne(Wrappers.<VendingMachineEntity>lambdaQuery()
                .eq(StringUtils.isNotBlank(innerCode), VendingMachineEntity::getInnerCode, innerCode));
        if (vendingMachine == null) {
            throw new LogicException("售货机不存在");
        }

        //2.根据工单类型更新售货机状态
        //工单类型为投放且设备状态为未投放,更改设备状态为运行
        if (taskType == VMSystem.TASK_TYPE_DEPLOY) {
            vendingMachine.setVmStatus(VMSystem.VM_STATUS_RUNNING);
            //工单为维修工单
        } else if (taskType == VMSystem.TASK_TYPE_REPAIR) {
            vendingMachine.setVmStatus(VMSystem.VM_STATUS_RUNNING);
            //工单类型为撤机工单
        } else if (taskType == VMSystem.TASK_TYPE_REVOKE) {
            vendingMachine.setVmStatus(VMSystem.VM_STATUS_NODEPLOY);
        }
        updateStatus(innerCode, vendingMachine.getVmStatus());
    }

    /**
     * 完成运营补货工单后更新货道信息
     *
     * @param contract
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateVendingMachine(SupplyContract contract) {

        //要更新的货道数据
        List<SupplyChannel> supplyData = contract.getSupplyData();
        //1.查询售货机货道信息
        List<ChannelEntity> channelEntities = channelService.list(Wrappers.<ChannelEntity>lambdaQuery()
                .eq(ChannelEntity::getInnerCode, contract.getInnerCode()));
        //2.更新售货商品的存量信息
        channelEntities = channelEntities.stream().map((channel) -> {
            supplyData.stream().forEach((supply) -> {
                if (channel.getChannelCode().equals(supply.getChannelId())) {
                    //如果两者相加没有超过最大容量
                    if (channel.getCurrentCapacity() + supply.getCapacity() <= channel.getMaxCapacity()) {
                        channel.setCurrentCapacity(channel.getCurrentCapacity() + supply.getCapacity());
                        channel.setLastSupplyTime(LocalDateTime.now());
                    }
                }
            });
            return channel;
        }).collect(Collectors.toList());
        //更新一批货道
        channelService.updateBatchById(channelEntities);

        //更新售货机最后补货时间
        this.update(Wrappers.<VendingMachineEntity>lambdaUpdate()
                .eq(VendingMachineEntity::getInnerCode, contract.getInnerCode())
                .set(VendingMachineEntity::getLastSupplyTime, LocalDateTime.now()));
    }

    /**
     * 查询每个售货机需要补货的数量
     *
     * @param innerCode
     */
    @Override
    public void sendChannelStockout(String innerCode) {
        //1.查询货道信息
        List<ChannelEntity> list = channelService.list(Wrappers.<ChannelEntity>lambdaQuery()
                .eq(ChannelEntity::getInnerCode, innerCode)
                .ne(ChannelEntity::getSkuId,0));
        if (CollectionUtils.isEmpty(list)){
            return;

        }
        //2.如果货道当前容量小于最大容量,发送补货协议
        List<SupplyChannel> supplyChannels = list.stream()
                .filter(c -> c.getCurrentCapacity() < c.getMaxCapacity())
                .map(new Function<ChannelEntity, SupplyChannel>() {
                    @Override
                    public SupplyChannel apply(ChannelEntity channelEntity) {
                        //封装补货信息
                        SupplyChannel supplyChannel = new SupplyChannel();
                        supplyChannel.setChannelId(channelEntity.getChannelId().toString());
                        supplyChannel.setCapacity(channelEntity.getMaxCapacity() - channelEntity.getCurrentCapacity());

                        //查询商品信息
                        SkuEntity sku = skuService.getById(channelEntity.getChannelId());
                        BeanUtils.copyProperties(sku, supplyChannel);
                        return supplyChannel;
                    }
                }).collect(Collectors.toList());

        //3.发送消息到emq
        SupplyContract supplyContract = new SupplyContract();
        supplyContract.setInnerCode(innerCode);
        supplyContract.setSupplyData(supplyChannels);

        try {
            mqttProducer.send(TopicConfig.TASK_SUPPLY_TOPIC,2,supplyContract);
        } catch (JsonProcessingException e) {
            log.error("发送补货消息失败" + e.getMessage());
        }
    }

}



















